<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>字符串形式的ref</title>
</head>

<body>
    <!-- 准备好一个容器 -->
    <div id="test"></div>


    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <script type="text/javascript" src="../js/babel.min.js"></script>

    <script type="text/babel">  /*此处一定要写babel*/
        //创建组件
        class Demo extends React.Component{
            //展示左侧输入框数据/
            showData = ()=>{
                // const input = document.getElementById("input1")
                // alert(input.value)
                const {input1} = this.refs
                alert(input1.value)
            }
            //展示右侧输入框的数据
            showData2 = ()=>{
                const {input2} = this.refs;
                alert(input2.value)
            }

            render(){
                return (
                    <div>
                        <input ref="input1" type="text" placeholder="点击按钮提示数据"/>&nbsp;
                        <button  onClick={this.showData}>点击提示左侧数据</button>&nbsp;
                        <input ref="input2" onBlur={this.showData2}  type="text" placeholder="失去焦点提示数据"/>
                    </div>
                )
            }
        }

        //渲染组件到页面
        ReactDOM.render(<Demo/>,document.getElementById('test'));
    </script>
</body>

</html>